P0404

Test 1 - 2:

Test 3 - 5:

Test 6 - 8:

Test 9 - 11:

SYMPTOM
P0404-EGR POSITION SENSOR PERFORMANCE

WHEN MONITORED:

SET CONDITION
The EGR flow or valve movement is not what is expected.

POSSIBLE CAUSES
- Good trip equal to zero
- High resistance in 5 Volt supply
- EGR sensor signal circuit open
- EGR assembly
- EGR solenoid control CKT
- Intermittent condition
- EGR sensor signal circuit open
- EGR sensor signal circuit shorted to ground
- Sensor ground circuit open
- EGR assembly (ground)
- PCM